/Engine/Source/Editor/Kismet/Public/ImaginaryBlueprintData.h
Checks if the Key has any special handling to be done, such as making a Pin out of it
TRUE if the JsonValue was specially handled, will not be further handled
virtual bool TrySpecialHandleJsonValue ( [FText](API\Runtime\Core\Internationalization\FText) InKey, [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FJsonValue](API\Runtime\Json\Dom\FJsonValue) > InJsonValue )